.position-top{
    position: fixed;
    top: 0;
    left: 0px;
    z-index: 8;
    height: 44px;
    background-color: rgba(255, 255, 255, 1);
    width: 100%;
    display: none;
}
.position-top.active {
    display: block;
}
.position-top ul{
    display: flex;
    flex-direction: row;
    line-height: 44px;
    width: 100%;
    padding: 0;
    margin: 0;
    list-style: none;
    justify-content: center;
    
}
.position-top ul li{
    flex: 1;
}
.position-top ul li span{
    color: rgba(0,0,0,0.45);
    left: 40px;
    font-size: 16px;
    text-align: center;
    font-family: PingFangSC-Regular;
    display: block;
    width: 100%;
    height: 100%;
}
.position-top .icondingwei{
    color: #FF4D4F;
    font-size: 18px;
}